Recommendations
B-2 Appendix B: Ground and RF protection 99-145912-A
B.2 Recommendations
B.2.1 To ground the ACU
To ground the ACU do as follows:
1. Ground the ACU to the ship/hull. For this purpose you may use a
short ADU cable and a grounding kit.
2. Further, the ACU must be grounded at its grounding stud in order to
ensure proper grounding if the short ADU cable is disconnected. For
further information, see To ground the ACU on page 3-24.
If you use the Extended cable support, make the ground connections
through the cable support. You may need to extend the ground plane
using copper foil, see the following section.
To extend the ground plane
In some cases it may not be possible to access the hull and at the same
time place the ACU in a suitable place. A way to ensure good grounding
and at the same time make it possible to ground the coax cable - is to
extend the ship ground plane by means of copper foil. The maximum
length of the foil is determined by the width of the foil:
Copper foil 5 cm wide: Max 50 cm
Copper foil 10 cm wide: Max 100 cm
Copper foil 20 cm wide: Max 200 cm
Do as follows:
1. Connect the foil to the hull by plenty of screws or hard–soldering.
The foil must be at least 0.1 mm thick.
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